In this paper, magnetoresistance (MR) measurements on carbon nanotube (CNT) 2-terminal spin-valve devices are presented. Results from samples with both permalloy (Py) and CoPd contacts show repeatable MR switching. In performing gate-dependent MR measurements on the Py-contacted CNTs, two distinct transport regimes are identified, and their transport behavior is discussed with respect to optimizing MR. Results from the first CoPd-contacted CNTs indicate a stable magnetic response with a higher magnitude than that of a Py-contacted nanotube in the same transport regime.
REFERENCES
1.
S.
Sahoo
, T.
Kontos
, J.
Furer
, C.
Hoffmann
, M.
Graber
, A.
Cottet
, and C.
Schönenberger
, Nat. Phys.
1
, 99
(2005
).2.
A.
Jensen
, J. R.
Hauptmann
, J.
Nygård
, and P. E.
Lindelof
, Phys. Rev. B
72
, 035419
(2005
).3.
D.
Preusche
, S.
Schmidmeier
, E.
Pallecchi
, C.
Dietrich
, A. K.
Hüttel
, J.
Zweck
, and C.
Strunk
, J. Appl. Phys.
106
, 084314
(2009
).4.
M.
Bockrath
, D. H.
Cobden
, P. L.
McEuen
, N. G.
Chopra
, A.
Zettl
, A.
Thess
, and R. E.
Smalley
, Science
275
, 1922
(1997
).5.
K.
Buschow
, P.
van Engen
, and R.
Jongebreur
, J. Magn. Magn. Mater.
38
, 1
(1983
).6.
C.
Spudat
, C.
Meyer
, K.
Goss
, and C. M.
Schneider
, Phys. Stat. Sol. B
246
, 2498
(2009
).7.
C.
Meyer
, C.
Morgan
, and C. M.
Schneider
, Phys. Status Solidi B
248
, 2680
(2011
).8.
E. D.
Minot
, Y.
Yaish
, V.
Sazonova
, J.-Y.
Park
, M.
Brink
, and P. L.
McEuen
, Phys. Rev. Lett.
90
, 156401
(2003
).9.
Y.
Zhang
, N. W.
Franklin
, R. J.
Chen
, and H.
Dai
, Chem. Phys. Lett.
331
, 35
(2000
).© 2012 American Institute of Physics.
2012
American Institute of Physics
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